As of Friday, Dec 1, my LastPass extension stopped working on Chrome (while in Sandboxie). I've tried several times to install the extension, but keep getting: could not unzip extension.

The baffling part of all this is that it works in Chrome when I don't run it in Sandboxie. In fact it did not need to be reinstalled, just works as ususal. It also works whether Firefox is sandboxed or not.